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6, Mass of a crate of apple is measured to be (18.0 ± 0.2) kg. Calculate the mass of 15 such crates of apple and estimate the uncertainty in the total mass. [3 points]
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18 mass of one Crak of apple m= Uh certah in mass msssơf 15 c.rak of apple- m=15x18 =240 kg Taking log o eguothion ) Differen

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